fix: return correct signature

packages/sdk-ts/src/core/accounts/PrivateKey.ts

@@ -168,15 +168,12 @@ export class PrivateKey {
    * @param {string} messageHashedBytes: the message that will be signed, a Buffer made of bytes
    * @returns {Uint8Array} a signature of this private key over the given message
    */
-  signHashed(messageHashedBytes: Buffer): Uint8Array {
+  async signHashed(messageHashedBytes: Buffer): Promise<string> {
     const { wallet } = this
 
-    const signature = wallet.signingKey.sign(messageHashedBytes)
-    const splitSignature = BytesUtils.splitSignature(signature)
+    const signature = await wallet.signMessage(messageHashedBytes)
 
-    return BytesUtils.arrayify(
-      BytesUtils.concat([splitSignature.r, splitSignature.s]),
-    )
+    return signature
   }
 
   /**
@@ -360,7 +357,9 @@ export class PrivateKey {
       }
 
       const decodedExtension =
-        InjectiveTypesV1Beta1TxExt.ExtensionOptionsWeb3Tx.decode(extension.value)
+        InjectiveTypesV1Beta1TxExt.ExtensionOptionsWeb3Tx.decode(
+          extension.value,
+        )
 
       const ethereumChainId = Number(
         decodedExtension.typedDataChainID,

packages/wallets/wallet-private-key/src/strategy/strategy.ts

@@ -9,7 +9,7 @@ import {
   DirectSignResponse,
   PrivateKey as PrivateKeySigner,
   getInjectiveSignerAddress,
-} from '@injectivelabs/sdk-ts'
+} from '@injectivelabs/sdk-ts/src/index'
 import {
   ErrorType,
   WalletException,
@@ -202,9 +202,10 @@ export class PrivateKeyWallet
     }
 
     try {
-      const signature = await pk.signHashed(Buffer.from(toUtf8(data), 'utf-8'))
+      const bufferUTF = Buffer.from(toUtf8(data), 'utf-8')
+      const signature = await pk.signHashed(bufferUTF)
 
-      return `0x${Buffer.from(signature).toString('base64')}`
+      return signature
     } catch (e: unknown) {
       throw new MetamaskException(new Error((e as any).message), {
         code: UnspecifiedErrorCode,